Fight them until there is no [more] fitnah and [until] religion [i.e., worship] is [acknowledged to be] for Allāh. But if they cease, then there is to be no aggression [i.e., assault] except against the oppressors.
Sahih International
وَقَـٰتِلُوهُمْ
waqātilūhum
And fight (against) them
Word breakdown
وَ
Harf · Conjunctionand
قَٰتِلُ
Fi'l · VerbAnd fight (against) them
to kill, slay, fight
170× in the Quran · Common
و
Ism · Personal pronounyou all/your
هُمْ
Ism · Personal pronounthem/their
Grammar rules
وَقَـٰتِلُوهُمْ (And fight (against) them) is a command — it's telling someone to do something.
We translate it as a direct command — "[Do this]!"
Lesson 10 · Commands & Futureوَقَـٰتِلُوهُمْ (And fight (against) them) uses form III (فَاعَلَ) — it describes doing something with or to each other.
The action involves two parties.
Lesson 12 · Verb Families II–IVوَقَـٰتِلُوهُمْ (And fight (against) them) starts with وَ, the most common Arabic word — it means "and".
We add "and" to connect this to what came before.
Lesson 4 · Particles